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A sample of the weak base hydroxylamine is titrated with 0.0900 M HCl. 30.0 mL is required to reach the endpoint. After the addition of 10.0 mL of titrant, the pH is 6.26. Calculate the pKb of hydroxylamine?
three mole of aluminum metal react with a mole of solid iron(iii) oxide to produce two moles iron metal and a mole of solid aluminum oxide
Consider the titration of 0.1000 M HBr with 0.1000 M KOH. Calculate the pH after 55.00 mL of the base has been added to 50.00 mL of the HBr solution
Determine the pH of an aqueous solution of CaCO3 that contains 1.7*10^-6 M of hydroxide ion [OH^-].
Find the value of Ka, for the conjugate acid of the following bases: a) methylamine, a solvent analogous to ammonia with a strong fish odor; Kb=5.0x10-4 b) morphine, an extremely powerful opiate;Kb= 1.6x10-6
strontium-90 and radon-222 both pose serious health risks. sr-90 decay by beta particle production and has a relatively
Express the concentration of a 0.0510 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
disulfur dichloride is produced by reacting chlorine gas with molten sulfur.s8 4 cl2 --gt 4 s2cl2what is the percent
if the level of solution in the column drops below the level of the resin, channels will be formed in the resin column.How will this influence the efficiency of ion exchange in the column?
how many grams will remain after 98.0 daysnbsp if phosphorus-32 has a half-life of 14.0 days starting with 6.00g of
A suspension of vanillin (2.5838 g, 16.98 mmol) and sodium hydroxide (0.022 g, 22 mL, 1M) was coolied in an ice-water bath before adding sodium borohydride (0.41s g, 10.89 mmol) while swirling the mixture. After addition of the sodium borohydride ..
Three 10.00mL samples of juice were titrated with DCP that had a standardized concentration of 1.01x10-3M. The three titrations took an average of 13.82mL of DCP. Calculate the mass (in mg) in 50.00mL of juice. (MM Ascorbic Acid = 176.124 g/mol)
A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68g of the compound yields 16.01g of CO2 and 4.37g of H2O. The molar mass of the compound is 176.1g/mol. What is the empirical and molecular formulas of the compound
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